-9.56% is the change from 847 to 766
Calculation steps:
[( 766 - 847 ) ÷ 847] x 100 = -9.56%
Formula
Percentage change = [(766 - 847) / 847] x 100
Subtract the new number by the original number
766 - 847 = -81
-81 ÷ 847 = -0.09563164108618655
-0.09563164108618655 x 100 = -9.56%